Interior view

Although no document connects Bramante’s name with the present apse, transept, crossing and dome, they are attributed to him under the influence of Leonardo da Vinci, whose ideas on radial architecture they reflect. Whether or not all the surface decorations were designed by Bramante himself, the structure is composed, like the examples in Leonardo’s drawings, of permutations and combinations of geometric forms such as cubes, hemispheres, half-cylinders, and the like.

The photo shows the interior of the dome.